Simulating a bullet penetrating the bucket using explicit dynamic module in Ansys with three different explicit materials
OBJECTIVE
To simulate a bullet penetrating into a bucket with three different materials and comparing the results.
The CAD model is imported using spaceclaim and checked for any geometry errors.
Simulation setup
Material Assignment
The bullet is assigned with material TANTALUM.
The bucket is assigned with three different materials in three cases
Case (1) - AL 1100-O
Case (2) - COPPER
Case (3) - Aluminium
The body interactions between the bullet and bucket is defined as frictionless.
Mesh Generation
The model is meshed with an element size of 12mm
Analysis settings
The simulation is set to an end condition of 0.01 seconds
The bullet velocity is defined as 139 m/s in negative x-axis direction.
The surface of bucket is given as fixed support making sure that the bucket does not move.
Results
Case (1) - AL 1100-O
Total Deformation
Equivalent Stress
Case (2) - COPPER
Total Deformation
Equivalent Stress
Case (3) - Aluminium
Total Deformation
Equivalent Stress
Conclusion
| Material | Maximum Total Deformation | Maximum Equivalent Stress |
| AL 1100 - O | 1689.4 mm | 219.2 MPa |
| Copper | 1390. mm | 450. MPa |
| Aluminium | 1390. mm | 290. MPa |
The high value of total deformation in all three cases is due to particles flying of from bucket after bullet impact.
These particles travel a large distance and thus increase the deformation value.
The maximum deformation occurs in AL 1100-O and maximum stress is induced in copper material.